This is the first child for Evan but the second for Ashlee, who already has six-year-old son Bronx with ex-husband Pete Wentz, and the actor took to Instagram to share his excitement.

He posted a number of pictures from the couple's wedding day and rehearsal dinner last August, with the caption: "#reflections of such a beautiful wedding. Me and my amazing wife @ashleesimpsonross. At my mothers house in Greenwich Connecticut! And now I can't wait to meet my little baby girl. (sic)

"Look how beautiful our reception was!!! Just looking back through photos. Such a special day."

Alongside an image of them kissing, he also wrote: "Love those lips!!! #weddingmemories"

The duo had already picked a name for their baby girl, but were keeping it a secret until after the birth.

Evan recently said: "It's unique. You guys will figure out the story behind it once we tell the name."